/*
 *  Copyright (C) 2011 Sherlock Downloader
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.sherlock.plugins.loaders;

import java.net.URLClassLoader;
import java.util.Properties;

import org.sherlock.commons.plugins.URLRevealer;
import org.sherlock.plugins.exceptions.PluginException;

/**
 *
 * @author Sherlock Downloader
 */
public class RevealerLoader {

    private static final String MAIN_CLASS = "org.sherlock.plugins.revealers.Revealer";
    private Properties properties;
	private URLRevealer revealer;

    public URLRevealer load(URLClassLoader loader, Properties properties) throws PluginException {
        this.properties = properties;
        try {
            revealer = (URLRevealer) Class.forName(MAIN_CLASS, true, loader).newInstance();
            readMetadata();
        } catch (ClassNotFoundException ex) {
            throw new PluginException("Missing main class " + MAIN_CLASS);
        } catch (Exception ex) {
            throw new PluginException("Invalid plugin");
        }

        return revealer;
    }

    private void readMetadata() throws PluginException {
        String domain = properties.getProperty("domain");
        if (domain == null) {
            throw new PluginException("Missing 'domain' property");
        }
        revealer.setDomain(domain);
    }
}

